Inflatable sofa



FIG. 1 is a perspective view of an inflatable sofa showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The broken lines are for the purposes of illustrating portions of the inflatable sofa and form no part of the claimed design. 

CLAIM The ornamental design for an inflatable sofa, as shown and described. 